水中低O2警報装置の研究

概要

論文の詳細を見る
A stationary Pt electrode was studied so as to be adapted for a long continued polarographical determintion of O2-concentration in water in the light of the following experimental data: Steady currents were observed when the Pt electrode was polarized at -0.90, -0.95V. against Ag or at -0.85, -0.90V. against a calomel half cell. The current was effectively protected from the disturbance caused by waterflow acr ?? ss the electrode by covering it with two sheets of filter paper soaked with phosphate buffe ?? of pH 7. The electrodes were settled inside a cylinder of acryl resine equipped with a temperature regulating system, so as to be kept free from the effect caused by temperature changes. The cylinder was kept closed at the upper end, while opened at the lower. The content of the cylinder was accordingly left open to surrounding water at the lower end, allowing the electrodes to contact with the water. However, a gradual decrease was often observed in the current measured with the electrodes thus fixed inside the cylinder. This decrease could be avoided by reserving an air layer in the upper part of the cylinder, though the cause of the decrease in current and the effect on it of the air layer remains yet unexplained. Changes in pH and ion concentration in surrounding water seemed to have little effect on the current. The current showed a good stability and also a good reproducibility in responding to O2-concentration in water, when examined with tap water of the laboratory.
公益社団法人日本水産学会の論文

著者

小山富康
北海道大学

水中低O2警報装置の研究

スポンサーリンク

概要

著者

関連論文

スポンサーリンク